Spectrophotometric Determination of Equilibrium Constants of Dimethyl and Diethyltin(IV) Dichloride with 5,10,15,20-Tetrakis(4-trimethyl-ammonio-phenyl)-prophine Tetratosylate
| Autor: | Farrokh Gharib, Fatemeh Jaberi |
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| Rok vydání: | 2015 |
| Předmět: |
Ligand
Chemistry Potentiometric titration Biophysics Biochemistry Medicinal chemistry Trigonal bipyramidal molecular geometry Hydrolysis Octahedron Stability constants of complexes Proton NMR Organic chemistry Physical and Theoretical Chemistry Determination of equilibrium constants Molecular Biology |
| Zdroj: | Journal of Solution Chemistry. 44:34-44 |
| ISSN: | 1572-8927 0095-9782 |
| DOI: | 10.1007/s10953-015-0290-8 |
| Popis: | The formation constant of dimethyl and diethyltin(IV) dichloride hydrolytic species and their complexation reactions with 5,10,15,20-tetrakis(4-trimethyl-ammonio-phenyl)-prophine tetratosylate (TTMAPP) were evaluated using potentiometric and spectrophotometric methods. 1H NMR spectra of dimethyl and diethyltin(IV) at different pHs have an octahedral structure in low pHs and a distorted trigonal bipyramidal structural arrangement at higher pH values. The compositions of the formed complexes were determined, and it was shown that they form a single mononuclear 1:1 species with the ligand. The results indicate that the formation constants are in the order Me2Sn(IV)–TTMAPP > Et2Sn(IV)–TTMAPP. |
| Databáze: | OpenAIRE |
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